Adjustable lamp-carriage.



O. IVI. SHECK.

ADJUSTABLE LAMP CARRIAGE.

APPLICATION FILED APR. 16, 1917- Patented Feb. 19, 1918.

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x, W@ M W y u O. IVI. SHECK.

ADIUSTABL LAMP CARRIAGE.

APPLICATION FILED APR-16| 1917. 1,257,1 28, Patented Feb. 19,1918,

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eurrn STATES PA ENT @FFIQE OSCAR 1VI. SHECK, OF CLEVELAND, OHIO,ASSIGNOR T0 THE ARGUS LAMP AND APPLIANCE COMPANY, OF CLEVELAND, OHIO.

ADJUSTABLE LAMP-CARRIAGE.

Appli-cation led April 16, 1917. Serial No. 162,464.

To all whom t 'may concern.'

Be it known that I, OSCAR M. SHECK, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in AdjustableLamp-Carriages, of which the following is a'specication.

This invention relates to means for supporting or mounting electriclamps, and it has particular reference to the mounting of lamps of thischaracter in houses provided therefor and that are employed inconnection with motion picture apparatus, stereopticons, and spot lightsor otherl stage lighting apparatus.

The invention has for its principal object the provision of a lampcarriage that is universally adjustable and self contained,therebymaking it adaptable for placement and operation in lamp houses of any ofthe types in common use and that are already installed. Another objectof the invention is to provide a simple, economical, and eflicientconstruction embodying a suitably insulated contact member to which thelamp socket is attached or connected, the said member being adjustablyand deta chably connected with the carriage that is universallyadjustable, and that is mounted on a bracket independent of, butadaptable to application in existing types of lamp houses. v

With the above and other apparent objects in View the present inventionconsists in the construction, arrangement, and combination of the partsas described in the following specification and pointed out definitelyin the annexed claims, reference being had to the accompanying drawingswhich are made a part of the specification and in which similarcharacters of reference are employed to designate similar parts.

In the drawings Figure 1 illustrates the improved mechanism inelevation.

Fig. 2 is a vertical, longitudinal section substantially on line 2-2,Fig. 4.

Fig.,3 is a section on line '3-3, Fig. 1.

Fig. 4 is a plan-view with the lamp and socket removed.

Fig. 5 is a plan view with the carriage removed.

Fig. 6 is a section on line 6-6, Fig. 4, and also showing the socket inposition, and

Figs. 7 and 8 are detached details which will be identified in thedescription.

Referring now to the several igures of the drawings, 1 represents thebase or main supporting bracket on which the operative parts aremounted. This supporting bracket may be made of sheet metal and isprovided Specification of Letters Patent. Patented Feb. 19, 1918. l

with vertical end members 1l and 1b cond nected by-longitudinal tie rods2. Mounted cn the rods 2 between the verticals 1a and 1b a slidableframe composed of the tubular members 3 and the connecting member orcross-head 4. Connected with the crosshead-4 are two vertical guidemembers 5. The lamp carriage is supported by and operates in combinationwith the said slidable frame and is constructed as follows:-

A bracket is provided with a horizontal base member 6 and a verticalhanger 6a. Attached to the member 6 and extending transversely thereonare contact ways 7, insulated relative to the bracket by theinterposedmember 8 and bushings 8a which are made of liber -or other suitableinsulating material. The contact ways 7 are spaced apart a predetermineddistance and are provided with inclined opposing faces 7EL as shown inFigs. 1 and 2. A two part contact 'block 9 is provided with inclinedsurfaces 9a adaptedto bear on the faces 7a of members 7. Spring members10 are attached to the members 7 and through theirbearings on the doublemember 9 retain the surfaces 9a and 7'L in contact and allow atransverse adjustment of double member 9, as hereinafter explained.

A member 11 composed of insulating material is rmly attached to theblocks 9 and provides a seat for the lamp socket 12. In the embodimentas illustrated the block 9,',

readily `be seen that when the screw 13 is actuated through the mediumof the head 13a the members 9 and 11 will travel transversely on theways 7, owing to the action of the screw in the member 11 coperatingwith the buttress 14. This provides a transverse adjustment :for thelamp which is inserted in to the slidable double block 9. Electric op,

the socket 12, said socket being seated on the member 11 which member isfirmly attached `block being provided with vertical apertures 16b whichregister vwith the vertical rods 5. lThe block 16 is also providedintermediate of the apertures 16b with a threaded vertical bore 16cadapted to receive a threaded shaft 17. Rigidly attached to the shaft 17is a, miter gear 18, said gear being in mesh with a companion miter gear19, which is rigidly attached to a shaft 20, said shaft 20 beingpreferably provided with a casing 21 adapted to revolve withthe shaft,the gear 19 Ibeing fixed to both shaft and casing by suitable means asshown by the pin 19aL Fig. 2. The shaft 20 has a bearing in the block,or cross-head 4, and the casing 21 which is inr'eality a part of theshaft 20, hasa'bearing in the vertical member 1a as shown at 1. A yokemember 22 is attached to the block 4 and provides an abutment for thehub of the gear 19, an opening 22a being provided in said yoke to freelyaccommodate the casing 21. The yoke 22 retains the gears 18 and 19 inoperative mesh and also performs an important function in the horizontaladjustment of the carriage as will presently be explained.

The shaft 20 is provided with a hand wheel 23 vby which it is actuated,thereby operating the gears 19 and 18 and raising or lowering the lampcarriage through the medium of the threaded connection of the shaft 17and block- 16, said block being attached to the carrlage bracket 6 asabove described. A cross bar 24 is firmly attached to and connects theguides 5; this forms a suitable stop for the adjusting block 16 and alsogives stability to the structure.

The cross-head 4 with its tubular attach-I ments 3 being mounted on therods 2 and provided with the yoke 22, co-acting with the casing 21 andgear' 19 provide the means for longitudinal, horizontal adjustment of-the carriage as will be understood from the following While thedetailed construction in this respect may be changed in the reductiontopractice, the operative principle will be the same. In the embodiment asillustrated the casing 21 extends through the gear 19 and has an end orthrust bearing on the crosshead 4, the yoke 22 providing an oppositethrust bearing on the gear 19. Thus it will be seen that the entireoperative carriage structure may be moved horizontally in a longitudinaldirection bythe exertion of suficient pressure on the hand wheel 23 oron the shaft and casing 20 and 21. l

The construction, arrangement and combination of elements as abovedescribed provides vertical, longitudinal, and transverse adjustment ofthe lalnp carriage relative to the main supporting member 1 which can belocated and suitably connected in any desired position in a lamp house.

The novel connection of the contact members 9 with the ways 7 providesconvenient means for expeditin'g the changing of lamp sockets.Duplicates of'the member 9 and the elements permanently attached theretoand assembled as shown, may be supplied and held in reserve. When asocket burns out`or becomes otherwise damaged, one of easily substitutedwithout the use of tools,

vby simply sliding the member 9 transversely on the ways 7 until it isfreed from the springs 10, and inserting another like assembla gebetween the springs 10 and ways 7 The foregoing specification inconnection with the drawings sets forth my invention in a simple form,there may be however considerable modification in details ofconstruction` without departure from the spirit of lthe invention. Iamnot therefore confined to this specific construction only so far aslimited by the scope of the claims.

What I claim and desire to secure by Letters Patent is 1. A lampcarriage comprising a lamp supporting bracket, inclined transverseelectric contact ways attached to and insulated from said bracket,truncated-wedge shape contact blocks slidable on said ways, springsbearing on the truncated wedges for maintaining the Contact between saidblocks and ways, an insulated lamp socket seat attached to the slidableblocks and insulating said blocks from each other, and electrical'connections from the blocks to the lamp socket.

2. A lamp carriage comprising a lamp supporting bracket, inclinedtransverse electric contact ways attached to and insulated from saidbracket, truncated-wedge shape contact blocks slidable on said ways,springs bearing on the truncated wedges for maintaining the contactbetween said blocks and ways, means for sliding the blocks on the ways,an insulated lamp socket seat attached to the slidable blocks andinsulating said blocks from each other, and means for electricallyconnecting'the slidable blocks with the lamp socket.

3. A lamp carriage comprising a lamp supporting bracket, inclinedelectric contact ways attached to the supporting bracket transverselythereon and insulated therefrom, truncated-wedge shape contact blocksblocks thereby maintaining the contact between said blocks and ways,means for sliding the blocks on the ways, an insulated lamp socket seatattached to the slidable blocks and insulating said blocks from eachother, and electrical connections from the slidable blocks to the lampsocket. j

4. A lamp carriage comprising a lamp supporting bracket, electriccontact ways attached to the supporting bracket transversely thereonyand insulated therefrom, Contact blocks slidable on said ways, meansbearing on the blocks for maintaining the contact between said blocksand ways, an insulated lamp socket seat attached to the slidable blocks,a screw threaded transversely in said seat member and abutting abuttress member attached to the lamp supporting bracket whereby theslidable blocks can be adjusted transversely, and electrical connectionsfrom the slidable blocks to the lamp socket.

5. A lamp carriage comprising a lamp supporting bracket; electriccontact ways attached to the supporting bracket transversey thereon andinsulated therefrom, contact blocks slidable on said ways, springsattached to the contact ways and bearing on the slidable blocks therebymaintaining the contact between the said blocks and ways, an insulatedlamp socket seat attached to the slidable blocks, a screw threadedtransversely in said seat member and abutting a buttress attached to thelamp bracket whereby the slidable blocks can be adjusted transversely,and electric connections from the slidable blocks to the lamp socket.

6. In an adjustable lamp carriage, the combination of a main supportingbracket; a horizontally slidable frame mounted in said bracket on Xedmembers connected therewith; a horizontal shaft journaled in thesupporting bracket; a bevel gear ixed on said shaft; a second bevel gearfixed to a threaded vertical shaft and in mesh with the irst named gear;a carriage supporting member provided with a threaded bore whichregisters with the threaded vertical shaft whereby said carriagesupporting member is-vertically adjusted by the operation of thehorizontal`shaft`andV its coperation with the bevel gears and threadedver tical shaft; and a lamp carriage attached to the adjustablesupporting member.

7. In an adjustable lamp carriage, the combination of a lamp supportingbracket;

transverse electric ways attached to and insulated from said bracket;contact blocks slidable on said ways; means bearing on the blocks formaintaining the contact between said blocks and ways; means for slidingthe blocks on the ways; an insulated lamp socket seat attached to theslidable blocks; electrical connections from the slidable contact blocksto the lamp socket; a main supporting bracket arranged longitudinallybeneath the lamp supporting bracket; a slidable frame mounted in saidmain bracket on iXed members connected therewith; vertical guide rodsattached to said frame; a vertically movable member to which the lampsupporting bracket is attached mounted on the said guide rods; avertical screw member threaded into said movable member; bevel gears foroperating said screw member; and means connected with the main bracketfor driving the bevel gears.

8. ln a lamp carriage, the combination of a lamp supporting bracket;electric contact ways attached to the said bracket transversely thereonand insulated therefrom; contact blocks slidable on said ways; meansbearing on the blocks for maintaining the contact between said blocksand ways; al1 insulated lamp socket seat attached to the slidableblocks; a screw threaded transversely in said seat member and abutting abuttress attached to the lamp supporting bracket whereby the slidableblocks can be adjusted transversely; electrical connections from theslidable blocks to the lamp socket; a main supporting bracket arrangedbeneath the lamp supporting bracket; a slidable frame mounted in saidmain bracket on Xed members connected therewith; vertical guide rodsattached to said frame; a vertically movable member to which the lampsupporting bracket is attached, mounted onthe said guide rods; avertical screw member threaded into said movable member; bevel gears foroperating said screw member; and means connected with the main bracketfor driving the bevel gears.

9. n an adjustable lamp carriage, the combination of a lamp supportingbracket; electric `contact ways attached to said bracket transverselythereon and insulated therefrom; contact blocks slidable on said ways;means bearing on the blocks for maintaining contact between said blocksand ways; an insulated lamp socket seat attached to the slidable contactblocks; electrical con'- nections from the contact blocks to the lampsocket; a screw threaded transversely in the socket seat member; abuttress attached to the lamp supporting bracket against which saidscrew abuts, whereby the slidable blocks can be transversely adjusted; amain lamp supporting bracket; a slidable frame mounted in said mainbracket on fixed members connected therewith; vertical guide rodsattached to said frame; a vertically movable member to which the lampbracket is attached mounted on the said guide rods; a vertical screwthreaded into said movable member; coperating bevel gearsl for operatingsaid screw member; and means connected with the main bracket for drivingthe bevel gears.

transverse electric contact Ways attached to and insulated from saidbracket; contact blocks slidable on said Ways; means bearing onthe-blocks for maintaining contact between vsaid blocks and ways; meansfor sliding the blocks on the Ways; an insulated i 'lamp socket seatattached to the slidable blocks 'and insulating said blocks from eachother; electrical connections from the Slidable blocks to the lampsocket; a main supporting bracket arranged beneath the lamp supportingbracket; a horizontally slidable frame mounted' in said bracket on iixedmembers connected therewith; a horizontal shaft j ournaled in the mainbracket; a bevel gear fixed on said shaft; a companion bevel gear fixedto a threaded vertical shaft and in mesh With the rst named ear; acarriage supporting member provided With a threaded bore which registersWith the threaded vertical shaftl whereby said carriage supporting,member is vertically adjusted by the operation of the horizontal shaftand its, coperation With the bevel gears and threaded vertical shaft;and the lamp supporting bracket attached to thevertically adjustablemember.

In testimony whereof I affix my signature.

OSCAR M. SHECK.

